CVE-2024-20399

Published Jul 1, 2024

Last updated a year ago

Overview

Description
A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated user in possession of Administrator credentials to execute arbitrary commands as root on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of arguments that are passed to specific configuration CLI commands. An attacker could exploit this vulnerability by including crafted input as the argument of an affected configuration CLI command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with the privileges of root. Note: To successfully exploit this vulnerability on a Cisco NX-OS device, an attacker must have Administrator credentials. The following Cisco devices already allow administrative users to access the underlying operating system through the bash-shell feature, so, for these devices, this vulnerability does not grant any additional privileges: Nexus 3000 Series Switches Nexus 7000 Series Switches that are running Cisco NX-OS Software releases 8.1(1) and later Nexus 9000 Series Switches in standalone NX-OS mode
Source
psirt@cisco.com
NVD status
Analyzed
Products
nx-os

Risk scores

CVSS 3.1

Type
Primary
Base score
6.7
Impact score
5.9
Exploitability score
0.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Severity
MEDIUM

Known exploits

Data from CISA

Vulnerability name
Cisco NX-OS Command Injection Vulnerability
Exploit added on
Jul 2, 2024
Exploit action due
Jul 23, 2024
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Weaknesses

psirt@cisco.com
CWE-78
nvd@nist.gov
CWE-78

Social media

Hype score
Not currently trending
  1. Actively exploited CVE : CVE-2024-20399

    @transilienceai

    9 Impressions

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    1 Reply

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  2. Actively exploited CVE : CVE-2024-20399

    @transilienceai

    8 Impressions

    0 Retweets

    0 Likes

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    1 Reply

    0 Quotes

  3. 🦗 VELVET ANT APT: Legacy F5 Appliances & Cisco Nexus Jailbreaks! 🌐🔓 China-nexus APT uses unmonitored F5 TMOS jump-boxes & CVE-2024-20399 root jailbreaks for multi-year persistence. 👉 Analysis: https://t.co/4OahpEipsF #sh3llc0d3 #shellcode #Cisco #ThreatInte

    @sh3ll_c0d3

    28 Sept 2026

    87 Impressions

    0 Retweets

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  4. Cyber news updates: Iranian banking systems faced a nationwide outage due to a suspected cyberattack, disrupting financial services. Full breakdown: https://t.co/nR16AMMNba A few other things worth watching this week: Cisco NX-OS zero-day CVE-2024-20399 exploited by https://t

    @cyberatlas_ai

    13 Jun 2026

    2 Impressions

    0 Retweets

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  5. Chinese-linked Velvet Ant hackers exploited zero-day CVE-2024-20399 in Cisco NX-OS to infiltrate an isolated critical infrastructure network and dwell there undetected for 10 years, Sygnia reported. https://t.co/8whQJ85FUr

    @threatcluster

    13 Jun 2026

    88 Impressions

    0 Retweets

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  6. CVE-2024-20399. Status: ✅ Confirmed exploited in the wild Date added: 2024-07-02 Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

    @lyrie_ai

    3 May 2026

    41 Impressions

    0 Retweets

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    1 Reply

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  7. Critical Cisco ISE flaw triggers system crashes (CVE-2024-20399) https://t.co/MYTKUyPTbk #patchmanagement

    @eyalestrin

    12 Nov 2025

    6 Impressions

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Configurations